Green flag and BUTTONS Pause / Play button is just changing the volume, since there's no way of pausing anything in Scratch, not that I know of. If you have absolutely no idea what's going on, click on top right corner (⋅ ⋅ ⋅) and question mark (?) If you have a bad quality PC (like mine I had) then go to full screen - Also if you try to read what the (?), (i), and (!)
Listen on SoundCloud- https://soundcloud.com/reknah You can also find links for every song featured if you go inside the project, all the down to sprite "Links" in Code, and you have reached your destination! If you see something's wrong, have a question, or anything at all, comment down below, please and thank you!